I think that might be the problem, my host is really bad, so maybe the connection with the Photon server times out.
I will set Photon off, and see what happens.
Damn… it seems to be working better now, altho I still see some “?”… It’s possible that my provider it’s not caching my page properly? I just made a claim about this isue and they said it was a problem of the WP installation and now… suddenly it’s fixed!